Oil-hole protector.



N0. 700,009. Patnted Aug. I2, 1902.

F. L. EBERHARDT 81. H. F. EMME.

' OIL HOLE PROTECTOR.

' (Application filed June 19, 1901.) No Model.)

UNIT D STATES Y FRED L. EBERI-IARDT AND HENRYF PATE T OFFICE.

. EMME, OFNEWARK, NEW JERSEY,

ASSIGNORS TO GOULD dz; EBERHARDT, OF NEWARK, NEW JERSEY, A

CORPORATION OF NEW JERSEY. I

OILi-HO'LE PROTECTOR.

SPECIFICATION forming'ipart of Letters Patent No. 706,809, dated August 12, 1902.

. Application filed'JunelQ, 1901.

To all whom it may'concern':

Be it known that we,- FRED L. EBE'RHARDT, residing at 17 Hillside'avenue, andjHENRYF, EMME, residing at 896- South Seventeentlil 5 street, Newark,county'of'Essex; State'of New Jersey, citizens of the United States, have invented certain new and useful Improvements in Oil-Hole Protectors,'-fully described and represented in the following speci'fication'an'd IO the accompanying drawings, forming a part of the same.

The object of the present invention is to furnish a construction for protecting the oilholes of machinery from accumulation of dust and grit and to secure-a greater efficiency for a filter-pad when applied'to the oil-hole.

Where cotton, sponge, or felt is placed in an'oil-hole to exclude dirt, it becomes clogged by dust if it is exposed to the atmosphere, and

the passage of the oil is thus prevented, and various oil-cups have been devised to form an oil-filter which should be protected from the dust, some of which have a movable piece upon the top which could be detached or raised to insert the oil or could by rotation move a shield to uncover a lateral feed-hole. Where the movement of the cover is required to insert the oil, the introduction of the oil requires a little labor, which'leads to its be- 0 ing neglected. Where 'sucheover's are detachable, they are ofteninislaid and the oilcup is left exposed, andto' avoid such an accident the cap is sometimes provided with a spring, so as to hold a shield normally in front of a lateral oil-hole. "Such spring-caps when long used often become clogged by dust, and thus fail to close the feed-hole. In the present invention we employ an inverted cup as an oil-'holeprotector, with a feed-hole in 40 the side of the cupthrough which the oil can be injected. The cupis thusmade'all in one piece, and dust is thus prevented from falling directly into the oil-inlet. -.To exclude anydust blown in to the lateral feed-hole, we form a recess in the bottom of the cup to receive a felt disk and provide an annular shoulder at the top of such recess to set or hold the felt in place and an inwardly-projecting lip at the bottom margin of such recess to retain the Serial no. e5,157.= (No model.)

felt disk ,removably therein. The felt can- 'not be rea'dily'retained'in such recess without the lip,'as the felt is so'soft that if it were 'madellargeen'ough. to crowd into the recess disk'is required, and we have therefore shown in the drawings the application of such recess and lipto a ball-valve oil-cup, as well as to the one which we have referred to above.

In the drawings, Figure l is a section of a shaft-bearing with the oil-protector applied to an oil-hole upon the upper side of the same. Fig. 2 is an external view of the same protector. Fig. 3 ma section through the recess for the felt disk. Fig. 4 shows the bottom end of the protector represented in Figs. 1 and 2 7o with the felt inserted inside the lip. Fig. 5 is a section taken at-the center line where hatched of a ball-valve oil-cup with a felt disk secured in the bottom recess by the inwardly-curved lip.

A designates a bearing for a shaft B, and O the oil-hole, provided with enlargement D upon the top, terminated with the usual slop- "ing bottom E, which is formed by a pointed drill. The enlargement forms a socket in which the protector is inserted.

The letter P is applied to the closed top of the protector,which is shown with cylindrical body 0 and internal cavity 0, which is open at the bottom.

The feed-hole dis shown upon the side of the body near the top, and in Fig. 1 an annular recess -e is shown at the bottom of the cavity, forming a shoulderff at a sufficient distance from the bottom to admit the felt 9o disk g. The lower marginbf' the recess is provided with the inwardly-turned lip h, and the disk 9 is of such a compressible nature that it may be crowded into the recess through the aperture inside the lip, which is visible in Fig. 4. 7

- The protector shown in Figs. 1 to 4, inclusive, consists of but a single piece and may thus be made very cheap and has no parts which can be deranged, while it retains the felt securely during transportation and handling.

Fig. 5 shows the application of the recess with lip at its edge to hold the felt upon the bottom of a ball-valve oiler, the shell of the oiler being shown of sheet metahwith an annular indentation 7;, forming within the body the shoulder f to hold the felt in position,

while the bottom end of the shell is formed with an inwardly-turned lip h to prevent the escape of the felt. Such illustration shows how the felt may be secured by the shoulder and lip in oil-cups of various constructions.

We are aware that it is not new to place a felt disk in the bottom of an oil-cup before applying the oil-cup to the oil-hole; but the object of the present invention is to secure the felt disk to the oil-hole protector in the process of manufacture, so that it will be rerained therein during transportation and can also be readily removed and replaced when necessary by a new disk. It is also common to spin a flange over a rigid disk placed in a recess; but in such case the disk is not removable and the flange can only be spun over the disk after it is inserted.

In the present invention the oil-hole protector is formed with the recess and with the annular flange before the felt disk is inserted, the texture of the felt permitting it to be crowded into the opening within the lip or to be removed therefrom at pleasure,while the lip holds it firmly in place so long as desired.

The essential features of our invention are the cup having feed-hole to supply the oil and the internal cavity 0 of the cup formed with the recess 6, having at the upper side the shoulderf to set a felt disk at a given point, and the annular lip h at the bottom or margin of the recess to \hold a felt disk in the recess when the disk is crowded through the lip into contact with the shoulder.

Having thus set forth the nature of the invention, what is claimed herein is 1. The oil-hole protector herein shown and described, and consisting of a cup provided with a feed-hole,the internal cavity of the cup having at the bottom the recess 6 with shoulderf upon its upper side to set a felt disk at a given point, and the annular lip 77. at the bottom or margin of the recess, adapted to hold a felt disk in the recess when the disk is crowded through the lip into contact with the shoulder.

2. The oil-hole protector herein shown and described and made in one piece, and consisting of an inverted cup with feed-hole in the side, the internal cavity 0 of the cup being enlarged at the bottom to form the recess 6 having shoulder f to set a felt disk at a given point, and the cup having the annular lip 71. at the margin of the recess adapted to hold afelt disk in the recess, when the disk is crowded through the lip into contact with the shoulder. In testimony whereof we have hereunto set our hands in the presence of two subscribing witnesses.

FRED L. EBERHARDT. HENRY F. EMME. Witnesses:

ULRICH EBERHARDT, J r., THOMAS S. CRANE. 

